Locking device for lubricator-plungers.



R. W. DAVIS.

LOCKING DEVICE FOR LUBRIGATOR PLUNGER$.

APPLICATION FILED NOV. e, 1913.

Patented Feb. 23', 1915.

2 SHEETE-SHEET 1.

Inventor Attorneys R. W. DAVIS.

LOOKING DEVICE FOR LUBRIGATOR PLUNGBRS.

APPLICATION FILED NOV. 6, 1913.

Patented Feb. 23, 1915.

2 SHEETS-SHEET 2.

Witnesses Attorneys 'tion with the present attachment.

*' an entree rarnnr enrich.

MY W. DAVIS, 0F BROWNSVILLE, PENNSYLVANIA, ASSIGNOR OF ONE-HALF T0 JAMESRYAN, SOUTH BROWNSVILLE, PENNSYLVANIA.

LOGIHNG- DEVICE FOR LUBRICATOR-PLUNGERS.

Application filed November 6, 1913. Serial No. 299,532.

To all whom it may concern: I

Be it known that 1, RAY W. DAVIS, a citizen of the United States,residing at Brownsville, in the county of Fayette and State ofPennsylvania, have invented a new and useful Locking Device forLubricator- Fingers, of which the following is a specification.

The present invention relates to improve ments in locking devices, theobject of the invention being the provision of a locking device by meansof which two cooperating threaded members maybe locked relatively toeach other against longitudinal or rotary movements, thus providing alocking means especially adapted for use in connection with lubricatorsof the plunger and grease cup type, and for locking locomotive drivewheel brake adjusting rods, and wedges or in fact any parts that aresubjected to jar upon locomotives or other types of engines andvehicles.

A further object of the present invention is the provision of a lockingdevice especially adapted for use in connection with a lubricator ofthegrease cup type, and in which the plunger member and the cap carriedthereby are locked relatively to each other and the grease cup againstaccidental rotation, thus providing an attachment,

which is readily adapted for use in connection with grease cups, whichwill remain locked in the desired position and which is not aifected bythe jar of the lubricator.

With the foregoing and other objects in view which will appear as thedescription proceeds, the invention resides in the coinbination andarrangement of parts and in the details of construction hereinafterdescribed and claimed, it being understood that changes in the preciseembodiment of the invention herein disclosed can be made withinthe scopeof what is claimed without departing from the spirit of the invention.

In the drawings Figure 1 is a side elevation of a connecting rod and pinwith the present attachment in operable relation thereto. Fig. 2 1s asection taken on line 2 2 of Fig. 1, the parts being enlarged. Fig. 3 isa section taken on line 3-3 of Fig. 2.. Fig. 4 is a perspective View ofthe slidable and rotatable sleeve used in cIo nnecig, 5 is a sideelevation ofthe resiliently held Patentedlteb. 23, 19115.

justing bolt for locomotive drive wheel brake adjusting rods as in use.c Fig. 9 is an enlarged detail view of the adjusting bolt withthe-present lock applied.

Referring to the drawings, the numeral 1 designates a connecting rod,whose head-or coupling member 2 is provided with the grease cup 3, ofthe lubricator. This structure is indicative of any structure nowemployed for this purpose, the present attachment, as will presentlyappear, being readily appl cable to this form of grease cup without inany manner greatly changing the structure thereof. -The port 4c'leadsfrom the grease cup to lubricate the contact around and upon the pin 5.v

The attachment includes the rotatable member 6 having the lower enlargedand exteriorly threaded head 7, for cooperation with" the interior screwthreads of the cup 3. In the form shown, as clearly illustrated in Fig.2, the lower end of the member is counterbored as at 8, for thereception of the snugly fitted or riveted head 9. It is possible,however, as in Fig. 7, to make the head 7 a solid head without theemployment of the member 9. The upper edge or rim of,

the grease cup 3 is providedwith two diametrically disposed notches orrecesses 10, this being the only alteration necessary upon grease cupsfor the application of the present attachment. These recesses 10 areformed for the reception of the locking lugs 11, there being two carriedupon the under side of the ring 12. This ring 12 is provided with theupstanding sleeve 13 which. is

integral therewith. The complete ring with the sleeve or collar 13isdisposcd for slidable and rotary movements upon the cylin- The member6 is provided with a central bore 15, in which. is inserted the coiledspring 16, the lower terminal 17 of wh ch s disposed to engage the crossbar 18, which 1s carried by the tapered pin 19, the said pm 19 beingdisposed to enter the lower end of the spiral spring 16, so that saidspring Wlll exert a tension downwardly upon the cross bar 18 so as tohold the projecting ends thereof in two of the notches 1 1, and thusprovide a resilient lock to hold the sleeve 12 against rotation. Theupper end 20 of the spring 16 is tapered, as clearly illustrated in Fig.2, and is adapted to be engaged by any one of the serrations orindentations 21 of the locking nut 22, said nut 22 being threaded intothe upper open end of the bore 15.

' By this means, the spring 16, may be pushed downwardly by inserting aninstrument, as

a screw driver through the slot 23, so that the screw 22 may be rotatedas far as desired at which time, the spring is released and the end 20engages one of the serrations of the screw and thus the spring locks thescrew to prevent its accidental loosening,

Two diametrically disposed elongated .slots 23' and 2a are providedthrough the body of the member 6, and lead into the central bore 15thereof. These slots are of sufficient width to-permit of the introduc-.tion of the bar 18 and its pin 19 through the same for engagement withthe spring 16, which is placed through the open end of the bore 15 whenassembling.

l From the foregoing description, it is evidentthat the member 6 mayhave its head 7 introduced to the desired distance within the grease cup3, to cause the necessary pressure upon the lubricant therein so thatany proper feeding action upon the same will be permitted. In many casesit is impossible to lock thismember against accidental v rotation anddisplacement, and therefore causes the release of the pressure upon thegrease, and especially where the present device is used upon theconnecting rod of a locomotive and is necessarily subjected'to jars. Itwill therefore be apparent that with the resent structure, that the bar18 and the ring 12, due' to the distance of the, head 7 within thegrease cup 3 will cause the compression of the spring 16, accordingly,the lugs 11 of thering l2 registering and seating within the. notches Oof the grease cup 3, and thus holding the ring 12 against rotationindependently of the grease cup 3, while the bar 181due to the pressureexerted thereupon by the spring 16, and its interengaging with thealined notches 14 of the sleeve 13, will thus lock the member 6 againstrotation independently of the ring 12. Thusthe grease cup 3 locks thering 12 against rotation, and the -co6peration of the notches 14 and thebar 18 with the ring 12 permits the ring 12 to lock the member 6 againstrotation. It will also be seen that due to the resilient locking of thebar 18 in such position, that the member 6 may be rotated manually torelease the plunger or head 7 when desired, that is when filling the cup3 or when increasing the pressure upon the lubricant therewithin.

In order to demonstrate the use of the present locking device inconnection with other means, attention is invited to Fig. 6, wherein theframe 25 contemplates the frame of a locomotive drive wheel box 27, awedge block 28 of usual structure being employed, and coiiperating withthe adjacent face of the box 27 and the inclined face 26 of the frame soas to hold the box 27 in the desired position, this structure beingsimilar to that generally used in connection with locomotives. In thisinstance, the grooved head 20 of the cylindrical threaded member 31 isemployed to enter a socket within the lower end of the wedge 28, thesame being locked relatively thereto by means of a screw 29, or anyother means that will permit the rotation of the member 31 to impart thedesired wedging action to the wedge 28. The frame 25 is provided withthe threaded socket 32, in which fits the threaded portion of the member31, oppositely disposed recesses 10' being provided in .the under sideof the frame 25 for the reception of the locking lugs 11 of the ring 12.The member 6' is constructed similarly tov the member 6 heretoforedescribed, while the bar 18 carried by the member 6' resiliently engagesthe notches 14' of the sleeve 13' and thus the ring 12 holds the member6' in the desired interlocking relation to the frame 25 through theinstrumentality of the locked ring 12'.

As shown in Figs. 8 and 9, the locking device D is shown as connectingwith the Ic comoti've drive wheel brake adjusting rod 33, and isconstructed similarly to that shown in Fig. 6. It is therefore evidentthat the present locking device is adapted particularly to be used uponmachinery wherein the same is subjected to jars, as upon a locomotive orother types of engines and vehicles.

What is claimed is:

1. A device of this character, including an interiorly threaded member,a cylindrical member having an exteriorly threaded lower end forengaging the threadedportion of the first member, a ring mounted forrotation and sliding movement upon the cylindrical portion thereof,coiiperating means carried by the ring and interiorly threaded memberfor lockingthe ring against rotation, and a spring pressed bar carriedby the cylindrical member for bearing .upon the ring to lock the movablethreaded member against rotation.

2. A device of this character, including an interiorly threadedlubricating cup, 2.

cylindrical member having an enlarged exteriorly threaded lower end forinterlocking With the threaded portion of the cup, a ring mounted forrotation and sliding movement upon the cylindrical portionthereof,.cooperating means carried by the ring and the cup for lockingthe ring against rotation, and a spring pressed bar carried by thecylindrical member for bearing upon the ring to lock the movablethreaded member against rotation.

In testimony that I claim the foregoing as my own I have hereto ah'ixedmy signature in the presence of two Witnesses.

RAY W. DAVIS.

Witnesses:

CHARLES A. FULTON, HOWARD B. STAPLETON.

